Sorry i don't know anything about cars. anyways i have a 2007 saturn ion and i have rarely gotten the message "pwr str" and the engine immediatly stalls. It happened 3 times today. every time it has happened within a minute of starting the car but today it happened on my drive home from school on a freeway. When i put the car in park and started it, I noticed that the fuel gauge was on empty and it took a few minutes to get back to where it was when normally it just goes right to where it is when i start the car. The engine wasn't over heating, my oil is good and i take it to be changed every 3000 miles or when the little sticker they give me tells me to. I couldn't find the power steering fluid in my car. What exactly is wrong?